Remove unused required prop in a component

What does this MR do?

Remove unused required prop in a component

• fixes console error from a required prop not being passed in

Prop history

• the prop was added in a767966d
• the prop and the usage of it was removed in 2d24c1d4, but the prop was not removed from the tests
• the prop was added back in d463a5ab, but not added with any usage. I suspect it was because the tests still had the prop in it.

How to reproduce

https://gitlab.com/snippets/1956676

Screenshots

Old	After

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
• Informed Infrastructure department of a default or new setting change, if applicable per definition of done

Security

If this MR contains changes to processing or storing of credentials or tokens, authorization and authentication methods and other items described in the security review guidelines:

• Label as security and @ mention @gitlab-com/gl-security/appsec
• The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
• Security reports checked/validated by a reviewer from the AppSec team